If you want to save money and the crack doesn't bother you, you can do the following to stop the cracking extension: . _- |8 n' f% W& ~# I+ f! w; e! D! B: B0 D+ l
(1) Buy a set-tube Epoxy (come with twin-tube to mix) at auto parts store or homedepot + I( i- ~4 D$ q! t8 h' i3 {1 z5 O& |5 h. Z
(2) To buy a round or square think-glass-disk with diameter or side length of 1 inch. If you can't find it, you can go 99 cents stores or dollartree to buy a large-clear-cloth-button at similar size. 8 s9 M) D' h* P/ t4 x6 x; |# z) F0 t, Q- M9 d
(3) Prepare Epoxy well, spread the paste to one side of the glass or button, attach it to the crack-upper-end from inside of windshield. Wait for 24 hrs. It'll be as solid as a rock and permanently stop the crack extension.